Home / 20,268.90-30,419.46-9,176.40

Finding the Fourth Proportional to 20,268.90, 30,419.46 and 9,176.40

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Solution

The fourth proportional to 20,268.90, 30,419.46 and 9,176.40 is: 13,771.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,268.90 : 30,419.46 = 9,176.40 : x
  2. Step 2: Convert to fraction form
    20,268.90/30,419.46 = 9,176.40/x
  3. Step 3: Cross multiply
    20,268.90x = 30,419.46 × 9,176.40
  4. Step 4: Simplify right side
    20,268.90x = 279,141,132.74
  5. Step 5: Solve for x
    x = 279,141,132.74/20,268.90
  6. Step 6: Final answer
    x = 13,771.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.